216202628 has 6 divisors (see below), whose sum is σ = 378354606. Its totient is φ = 108101312.

The previous prime is 216202619. The next prime is 216202639. The reversal of 216202628 is 826202612.

It can be written as a sum of positive squares in only one way, i.e., 216148804 + 53824 = 14702^2 + 232^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 216202628.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27025325 + ... + 27025332.

It is an arithmetic number, because the mean of its divisors is an integer number (63059101).

Almost surely, 2^216202628 is an apocalyptic number.

It is an amenable number.

216202628 is a deficient number, since it is larger than the sum of its proper divisors (162151978).

216202628 is a wasteful number, since it uses less digits than its factorization.

216202628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54050661 (or 54050659 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 216202628 is about 14703.8303853112. The cubic root of 216202628 is about 600.1875598812.

The spelling of 216202628 in words is "two hundred sixteen million, two hundred two thousand, six hundred twenty-eight".